Finding the Fourth Proportional to 1,901.25, 2,849.94 and 1,077.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,901.25 : 2,849.94 = 1,077.78 : x
2. Step 2: Convert to fraction form
   1,901.25/2,849.94 = 1,077.78/x
3. Step 3: Cross multiply
   1,901.25x = 2,849.94 × 1,077.78
4. Step 4: Simplify right side
   1,901.25x = 3,071,608.33
5. Step 5: Solve for x
   x = 3,071,608.33/1,901.25
6. Step 6: Final answer
   x = 1,615.57